This is my first layout. It is HO Scale. All of it was given to me by father before he passed away. He had not ran the trains or had a table up for about 12 to 13 years . So i had a lot to clean when I got them. I have a 8' x 41/2' layout now. The track is nailed to the plywood. I have all Spurs and switches wired and I have tested all of it. And I am ready for the next step. But i am not sure what that is? I didnt put any foam down. I didnt know about it until after I put it all the track down and had it wired. I want to put mountains in one corner with a creek on it going to a small lake in the middle of the table and a spot to put a spur going to a mine on the mountian. Where should I start or should I start all over with foam? Also I have brass track but i found a lot of nickel silver flex track. This is my first layout. So lots of imput would be appreciated.